for many adult patients with moderate to severe rheumatoid arthritis humira has been proven to help relieve pain and stop joint damage. humira's use in patients with ra has been evaluated in multiple studies during the past 14 years. humira can lower your ability to fight infections, including tuberculosis. serious, sometimes fatal events can occur such as, infections, lymphoma or other types of cancer, blood, liver and nervous system problems, serious allergic reactions, and new or worsening heart failure. before starting humira, your doctor should test you for tb. ask your doctor if you live or have been to a region where certain fungal infections are common. tell your doctor if you have had tb, hepatitis b, are prone to infections, or have symptoms such as fever, fatigue, cough, or sores. you should not start humira if you have any kind of infection.